Investments, Securities with Continuous Unrealized Loss Position (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022 USD ($) Securities	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) Securities	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) Securities
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	$ 187,994		$ 187,994		$ 33,467
12 months or longer	9,129		9,129		4,761
Total	197,123		197,123		38,228
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses [Abstract]
Less than 12 months	18,586		18,586		465
12 months or longer	1,993		1,993		252
Total	20,579		20,579		$ 717
Gross OTTI losses charged to realized gains	$ 0	$ 0	$ 0	$ 0
Number of securities in unrealized loss position \| Securities	227		227		61
U.S. Treasury Securities and Obligations of U.S. Government Agencies and Authorities [Member]
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	$ 40,587		$ 40,587		$ 30,141
12 months or longer	4,570		4,570		0
Total	45,157		45,157		30,141
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses [Abstract]
Less than 12 months	3,139		3,139		416
12 months or longer	829		829		0
Total	3,968		3,968		416
Obligations of States and Political Subdivisions [Member]
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	6,114		6,114
12 months or longer	0		0
Total	6,114		6,114
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses [Abstract]
Less than 12 months	1,244		1,244
12 months or longer	0		0
Total	1,244		1,244
Corporate Securities [Member]
Available-for-sale securities, continuous unrealized loss position, Fair Value [Abstract]
Less than 12 months	141,293		141,293		3,326
12 months or longer	4,559		4,559		4,761
Total	145,852		145,852		8,087
Available-for-sale Securities, Continuous Unrealized Loss Position, Unrealized Losses [Abstract]
Less than 12 months	14,203		14,203		49
12 months or longer	1,164		1,164		252
Total	$ 15,367		$ 15,367		$ 301

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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